Abstract: A distance measuring module includes a light emitter, a reflecting unit and a light receiver. The light emitter is configured to emit first light, wherein an object reflects the first light to form second light. The reflecting unit is configured to perform a movement to reflect the first light or the second light. The light receiver is configured to receive the second light for calculating a distance between the distance measuring module and the object. An axis is oriented at a first angle or a second angle with respect to a baseline when the reflecting unit is performing the movement. When the axis is oriented at the first angle, the first light is reflected to the object by the reflecting unit. When the axis is oriented at the second angle, the second light is reflected to the light receiver by the reflecting unit.

Abstract: A distance measuring module includes a light emitter, a reflecting unit and a light receiver. The light emitter is configured to emit first light, wherein an object reflects the first light to form second light. The reflecting unit is configured to perform a movement to reflect the first light or the second light. The light receiver is configured to receive the second light for calculating a distance between the distance measuring module and the object. An axis is oriented at a first angle or a second angle with respect to a baseline when the reflecting unit is performing the movement. When the axis is oriented at the first angle, the first light is reflected to the object by the reflecting unit. When the axis is oriented at the second angle, the second light is reflected to the light receiver by the reflecting unit.

Abstract: A prism assembly includes a first prism, a second prism, a roof prism and an optical multilayer film. The first prism includes a first, a second and a third surface. The second prism includes a fourth, a fifth and a sixth surface. The fifth surface faces the third surface. The roof prism includes a seventh, an eighth and a ridge surface. The seventh surface faces the second surface. The optical multilayer film is disposed between the fifth surface and the third surface. A first light beam and a second light beam entering the first prism are totally reflected from the second surface to the optical multilayer film which reflects the first light beam but allows the second light beam to pass through. The second light beam enters the second prism, is totally reflected on the sixth surface, and exits from the fourth surface of the second prism.

Abstract: A photo-sensor type touch device includes a screen, two light modules, a sensor, and a calculating unit. The screen has a displaying region to show images thereon. The light module emits linear invisible light to the displaying region. The invisible light is substantially perpendicular to a normal of the displaying region. The sensor senses a change of the invisible light on the displaying region when an object approaches the displaying region, and sends a signal out. The calculating unit is electrically connected to the sensor to receive the signal and calculate the signal to obtain a location of the object on the displaying region.

Abstract: A prism assembly includes a first prism, a second prism, a roof prism and an optical multilayer film. The first prism includes a first, a second and a third surface. The second prism includes a fourth, a fifth and a sixth surface. The fifth surface faces the third surface. The roof prism includes a seventh, an eighth and a ridge surface. The seventh surface faces the second surface. The optical multilayer film is disposed between the fifth surface and the third surface. A first light beam and a second light beam entering the first prism are totally reflected from the second surface to the optical multilayer film which reflects the first light beam but allows the second light beam to pass through. The second light beam enters the second prism, is totally reflected on the sixth surface, and exits from the fourth surface of the second prism.

Abstract: An optical system includes a transmitter emitting a signal to a measured object; a receiver receiving the signal reflected back from the measured object; and a transmissive display device displaying a distance of the measured object measured by the range finder, wherein an image of the measured object is visible directly through the transmissive display device.

Abstract: A light module includes a light source and an optical lens. The light source emits light to the optical lens. The light source is a single unit and has a parallelizing surface, a first plane, a wave surface, and a second plane in sequence. The light source emits light to the optical lens and through the parallelizing surface, the first plane, the wave surface, and the second plane in sequence to form a parallel linear light.

Abstract: A photo-sensor type touch device includes a screen, two light modules, a sensor, and a calculating unit. The screen has a displaying region to show images thereon. The light module emits linear invisible light to the displaying region. The invisible light is substantially perpendicular to a normal of the displaying region. The sensor senses a change of the invisible light on the displaying region when an object approaches the displaying region, and sends a signal out. The calculating unit is electrically connected to the sensor to receive the signal and calculate the signal to obtain a location of the object on the displaying region.

Abstract: A miniaturized laser emitting module includes a substrate, a laser diode and a lens element. The substrate includes an installation channel, the laser diode is installed in the installation channel of the substrate, and the lens element is installed in the installation channel of the substrate in a light-emitting direction of the laser diode. The lens element includes a collimating lens portion being adjacent to the laser diode and an undulating lens portion being distant from the laser diode. The collimating lens portion and the undulating lens portion are mutually connected to form as type of one piece.

Abstract: A light module includes a light source and an optical lens. The light source emits light to the optical lens. The light source is a single unit and has a parallelizing surface, a first plane, a wave surface, and a second plane in sequence. The light source emits light to the optical lens and through the parallelizing surface, the first plane, the wave surface, and the second plane in sequence to form a parallel linear light.

Abstract: A filter device is provided, including a first and second conductor tube and an outside tube. The first light conductor tube includes a first end for light input, a second end including a first slanted assembled end surface coated with a filter, a first tube, and a first light conductor inserted into the first capillary. The second light conductor tube includes a third end for light output, a fourth end including a second slanted assembled end surface, a second capillary, and a second light conductor inserted into the second capillary. The second assembled end of the fourth end is disposed next to and parallel to the first slanted assembled end surface of the second end of the first light conductor tube to coaxially couple to the first light conductor tube. The outside tube is jacketed outside of the first and second light conductor tubes.

Abstract: A filter device is provided, including a first and second conductor tube and an outside tube. The first light conductor tube includes a first end for light input, a second end including a first slanted assembled end surface coated with a filter, a first tube, and a first light conductor inserted into the first capillary. The second light conductor tube includes a third end for light output, a fourth end including a second slanted assembled end surface, a second capillary, and a second light conductor inserted into the second capillary. The second assembled end of the fourth end is disposed next to and parallel to the first slanted assembled end surface of the second end of the first light conductor tube to coaxially couple to the first light conductor tube. The outside tube is jacketed outside of the first and second light conductor tubes.

Abstract: A package structure of a WDM device is disclosed. The package structure disclosed here can effectively reduce the amount of the adhesive leaking during the manufacturing process and increase the yield of the manufacturing process. The package includes: a tubular fixing unit having a low thermal expansion coefficient; a first collimator partially embedded in the tubular fixing unit; a second collimator partially embedded in the tubular fixing unit and a filter located between the first and second collimators inside the tubular fixing unit. The first and second collimators are fixed to the tubular fixing unit through an adhesive, respectively. Besides, an external metal tube encompasses the tubular fixing unit. In cooperation with the two metal caps positioned at the two ends of the external metal tube, the disclosed package structure can be protected from the damage otherwise caused by heat, electromagnetic waves or vibration of the ambient environment.